'Grain' in the Bible

One Sabbath He was walking along [with His disciples] through the grainfields, and as they went along, His disciples began picking the heads of grain.

Other seed fell among thorns, and the thorns came up and choked it, and it yielded no grain.

And other seed fell into good soil, and as the plants grew and increased, they yielded a crop and produced thirty, sixty, and a hundred times [as much as had been sown].”

The earth produces crops by itself; first the blade, then the head [of grain], then the mature grain in the head.

But when the crop ripens, he immediately puts in the sickle [to reap], because [the time for] the harvest has come.”

It is like a mustard seed, which, when it is sown on the ground, even though it is smaller than all the [other] seeds that are [sown] on the soil,